I got this with my first lipo batterie, its very nice. It basicly showes you the chargeing level by showing you by the ammount of green lights that are lit, and red when it needs charged. It also makes a loud sound that is loud enough for you to hear, but not for any body further than 10 feet to hear. The only problem i have is that when i shoot it makes a beep every now and then, and i have no clue why. I give this a 10/10 and if you wana keep your batterie in good condition and make it last, this is for you.

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